Donald E. Horacek

North American Scientific, Inc. manufactures and markets medical devices for the radiation oncology community. It offers intensity modulated and image guided radiation therapy products and services, as well as brachytherapy seeds used in the treatment of prostate cancer. The company also offers iodine-based and palladium-based implantable brachytherapy seeds for the treatment of prostate cancer. It provides a line of brachytherapy seeds for use in the treatment of ocular melanoma and other solid tumor applications. The company manufactures other radio isotopic products used in various medical, environmental, research and industrial applications. North American Scientific was incorporated in 1990 and is headquartered in Chatsworth, CA.

IRIS International, Inc. engages in the manufacture of surgical and medical instruments. Its products include in vitro diagnostic systems. The company was founded in 1979 and is headquartered in Brea, CA.